LRI2K-A1T/1GE STMicroelectronics, LRI2K-A1T/1GE Datasheet - Page 47

• Manufacturer Part Number: LRI2K-A1T/1GE
• Manufacturer: STMicroelectronics

Specifications of LRI2K-A1T/1GE

• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Not Compliant

LRI2K
20.1
Inventory
When receiving the Inventory request, the LRI2K runs the anticollision sequence. The
Inventory_flag is set to 1. The meaning of flags 5 to 8 is shown in
to 8 when bit 3 =
The request contains:
●
●
●
●
●
●
The LRI2K does not generate any answer in case of error.
Table 21.
The response contains:
●
●
Table 22.
During an Inventory process, if the VCD does not receive an RF LRI2K response, it waits a
time t
request EOF sent by the VCD.
●
●
where:
●
●
t
mode.
NRT
Response
Request
SOF
SOF
the flags,
the Inventory command code (see
the AFI if the AFI flag is set
the mask length
the mask value
the CRC
the flags
the Unique ID
If the VCD sends a 100% modulated EOF, the minimum value of t
t
If the VCD sends a 10% modulated EOF, the minimum value of t
t
t
t
and t
3
3
3
SOF
NRT
min = 4384/f
min = 4384/f
before sending an EOF to switch to the next slot. t
is the time required by the LRI2K to transmit an SOF to the VCD
is the nominal response time of the LRI2K
SOF
Request
8 bits
Response
flags
Inventory request format
Inventory response format
are dependent on the LRI2K-to-VCD data rate and subcarrier modulation
8 bits
flags
1.
C
C
Inventory
(323.3µs) + t
(323.3µs) + t
01h
DSFID
8 bits
Optional
SOF
NRT
8 bits
AFI
Table 20: Command
length
Mask
8 bits
64 bits
UID
3
Mask value
starts from the rising edge of the
0 - 64 bits
codes)
Table 13: Request flags 5
3
3
CRC16
16 bits
is:
Commands codes
is:
CRC16
16 bits
Response
Request
EOF
EOF
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